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| author | Donghwa Lee <dh09.lee@samsung.com> | 2013-03-21 09:45:29 +0900 |
|---|---|---|
| committer | Chanho Park <chanho61.park@samsung.com> | 2014-11-18 11:42:55 +0900 |
| commit | 0359349f71b26431dd4ab8132bb6d255717fc69f (patch) | |
| tree | e57e611d0e8ed278d8e683417733dd1fd7dd20c1 /drivers/video | |
| parent | 7ebbcae5358b1916b3400676bc7307c9bd78f314 (diff) | |
| download | linux-3.10-0359349f71b26431dd4ab8132bb6d255717fc69f.tar.gz linux-3.10-0359349f71b26431dd4ab8132bb6d255717fc69f.tar.bz2 linux-3.10-0359349f71b26431dd4ab8132bb6d255717fc69f.zip | |
ARM: DISPLAY: support suspend/resume for mipi dsi of DISPLAY CORE
Signed-off-by: Donghwa Lee <dh09.lee@samsung.com>
Diffstat (limited to 'drivers/video')
| -rw-r--r-- | drivers/video/display/source-exynos_dsi.c | 37 |
1 files changed, 32 insertions, 5 deletions
diff --git a/drivers/video/display/source-exynos_dsi.c b/drivers/video/display/source-exynos_dsi.c index 145d57be56f..d7094f4e4f7 100644 --- a/drivers/video/display/source-exynos_dsi.c +++ b/drivers/video/display/source-exynos_dsi.c @@ -989,7 +989,9 @@ static int exynos_dsi_enable(struct video_source *src) return ret; dsi->params = params.p.dsi; - regulator_bulk_enable(ARRAY_SIZE(dsi->supplies), dsi->supplies); + ret = regulator_bulk_enable(ARRAY_SIZE(dsi->supplies), dsi->supplies); + if (ret < 0) + return ret; clk_prepare_enable(dsi->bus_clk); clk_prepare_enable(dsi->pll_clk); @@ -1008,6 +1010,7 @@ static int exynos_dsi_enable(struct video_source *src) static int exynos_dsi_disable(struct video_source *src) { struct exynos_dsi *dsi = src_to_dsi(src); + int ret; if (!dsi->enabled) return 0; @@ -1025,7 +1028,9 @@ static int exynos_dsi_disable(struct video_source *src) clk_disable_unprepare(dsi->pll_clk); clk_disable_unprepare(dsi->bus_clk); - regulator_bulk_disable(ARRAY_SIZE(dsi->supplies), dsi->supplies); + ret = regulator_bulk_disable(ARRAY_SIZE(dsi->supplies), dsi->supplies); + if (ret < 0) + return ret; return 0; } @@ -1297,18 +1302,40 @@ static int exynos_dsi_remove(struct platform_device *pdev) * Power management */ +#ifdef CONFIG_PM_SLEEP static int exynos_dsi_suspend(struct device *dev) { struct exynos_dsi *dsi = dev_get_drvdata(dev); + struct video_source *src = &dsi->out; + int ret; - if (dsi->enabled) - return -EBUSY; + if (dsi->enabled) { + ret = display_entity_set_state(src->sink, DISPLAY_ENTITY_STATE_OFF); + if (ret < 0) + return -EBUSY; + } return 0; } +static int exynos_dsi_resume(struct device *dev) +{ + struct exynos_dsi *dsi = dev_get_drvdata(dev); + struct video_source *src = &dsi->out; + int ret; + + if (!dsi->enabled) { + ret = display_entity_set_state(src->sink, DISPLAY_ENTITY_STATE_ON); + if (ret < 0) + return -EBUSY; + } + + return 0; +} +#endif + static const struct dev_pm_ops exynos_dsi_pm_ops = { - SET_SYSTEM_SLEEP_PM_OPS(exynos_dsi_suspend, NULL) + SET_SYSTEM_SLEEP_PM_OPS(exynos_dsi_suspend, exynos_dsi_resume) }; /* |